I was unable ...................... a solution to the problem. A.find B.to find C.Either could be used here Answer and Feedback Answer:B Feedback:Unable is followed by an infinitive with to. do you want? view more test Xem thêm Share this post Some other questions you may be interested in. I am a famous animal that is closely associated to Santa Claus. In Christmas stories, my eight friends and I*^*pull Santa's sleigh through the skies on Christmas Eve. What am I? ........ I am also known as a present and people like to put me in beautifully decorated packages. I am given to*^*friends, family and children at Christmas time. What am I? ........ I am usually made of glass or plastic and I come with hooks on top of me so that you can hang me on*^*Christmas trees. I come in all shapes and sizes and I'm usually very colorful and pretty. What am I? ........*^* Another word for Halloween is All ....... 's Eve. Count Dracula is a long-time symbol of Halloween. Legends say that he comes from ....... and only awakes at*^*midnight or when there is a full moon. Another word for ghost and ghoul is ........ Were ....... are another long-standing symbol of Halloween. Legendary tales claim that this a man who turns*^*into a vicious, wild, canine on full moons. In the fall, people often see ....... standing in agricultural fields. Although, they are not scary and are only*^*meant to scare away crows, they are another symbol of Halloween and people will decorate their homes with*^*them in order to denote the holiday. When people decorate their homes on Halloween, they often hang artificial spider ....... from their ceilings and*^*rafters. They do this so that the houses look like old, scary homes in order to celebrate the spooky holiday. On Halloween, some people will dress up and wear ....... on their faces. This is a face cover-type disguise that*^*conceals a person's identity.